SDJS-336 "What happens if you inject 15,000ml of enema?" SOD female employees seriously try anal sex and AtoM practice research that starts off painful, but ends up with a huge intestinal juice leak that's even bigger than an enema, leaving

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The SOD Sex Science Lab is a serious research lab into sex. This time, the theme is "intestinal juice." A female researcher uses herself as a test subject and gives a thorough report on cleansing, expansion, enemas, and anal sex. Even though she turns pale, she bravely takes on experiments such as enema endurance, AtoM, and three-hole fucking, and makes full use of the entire SOD headquarters to record the research that resulted in a total of 15,000ml of intestinal juice being squirted out.